Exodus 30:18-20

Young's Literal Translation

¹⁸ `And thou hast made a laver of brass (and its base of brass), for washing; and thou hast put it between the tent of meeting and the altar, and hast put water there;

¹⁹ and Aaron and his sons have washed at it their hands and their feet,

²⁰ in their going in unto the tent of meeting they wash [with] water, and die not; or in their drawing nigh unto the altar to minister, to perfume a fire-offering to Jehovah,